OK, thanks for the reply.I've ordered SIIG-card#JJ-E10D11-S3 and am in the process of returning three different cards that don't get along with HP Pavilion p6 & Win7/64 Home-Premium.Now I've never heard of SIIG before (I never used RS232 in my professional work) but, from their website, it seems like they make stuff for industrial users.So I'm hopeful that their product will be a winner for me; besides I've ordered it from the HP website, so that's a good omen for me that HP is selling a SIIG product.Anyway, could someone tell me where in the driver-coding I could see where the OS gets the info it needs to place the code in the proper file location?I'd look at the code when it comes here later this week.73 Jerry KM3K

The OS decides, based on whether the driver code is 32 bit or 64 bit. Drivers, like applications, can access twice as much memory if they are 64 bit - thus they run more efficiently.

The 64-bit flavor of Windows 7 can access up to 192 GB of RAM, quite a bit more than twice the 4 GB limit imposed by the 32-bit flavor.

And that 192 GB limit is simply a Windows limitation. 64bit machines can theoretically address 16.4 million terabytes of memory. So we're not going to run out address space again soon.

We (Rational Software, then known as Rational Machines) developed and sold a machine with 64-bit addressing from 1985 through 1992; it was the only commercially successful high-level language-directed architecture. You can see one in Silicon Valley's Computer History Museum.

maybe it installs when the first 300 copies are sold, and maybe it doesn't.

but the first serious bug or security fix that closes the loophole the rogue code writer found by accident will crash his stuff now and forevermore, say halleluia.

it has been that way since windows 1.01. and if you are a Mac man, well I gotta tell you, from day one in 1984, rogue code writers who do NOT worship and use the Mac Toolkit in ROM exactly as described all get quickly slapped by the Karma wheel.

I still maintain the c:\work directory on my windows machines, something from DOS 2.1 that I can't give up. it's a form of security blanket. but it's not an app haven, it's where the sniped logo snapshots and online cartoons reside.

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